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Vim also has an undo tree, although you need a plugin to work with it easily (called "Undotree").

• zwkrt 4y ago
  Yes but the article is specially calling out that using an undo tree is something no one wants.
  • lostcolony 4y ago
    And that you still want a linear path through your undos and redos...and that's something that Emacs does.
  • cwillu 4y ago
    It's more of an implementation detail that is available to users. The article's simplification is also available via :earlier and :later, with the added bonus that they can take _time_ as a parameter as well as a simple revision count. “:earlier 1h” has been handy more than once.